Figure 5From: Significant difference between three observers in the assessment of intraepidermal nerve fiber density in skin biopsy Skin biopsy immunostained for PGP 9.5, which were evaluated in this study. Number of IENF stated by the observers (MF, ISH and SW) of this study: 7–11 fibers. The different results were probably caused by difficulties to determine the correct position of the fibers due to the high number of fibers and inexact illustration of nerve fibers and basement membrane.Back to article page